Q. Who discovered that light is essential for releasing oxygen in plants?
A) Stephen Hales
B) Lavoisier
C) Jan Ingenhousz
D) Von Helmont
Explanation
Using a similar set up as used by Priestley but by placing it once in a dark and once in a sunlight, Jan Ingen Housz (1730-1799) showed that sunlight is essential to plant process that purifies air
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.